You really didn’t think VW was the only one, did you?
Hard for them to complain about Fiat when VW has been proven to be doing this.
A good question!
IMO, the manufactures have an obligation, to produce the best engines, within price constraints. Legal and no more.
If the speed limit is 55, you do not drive 25, because it might be better. Than ZERO would be best.
Mazda was attempting to bring a diesel to the US but canned it because they couldn’t legitimately make emissions and have MPG similar to VW ... Their engine was probably cleaner than FCA or VW ... I really like the idea of a small turbodiesel in a light car it makes tremendous sense.
Mazda should sue on grounds that the cheaters made their legit entry unmarketable or something along those lines...